"People stay with roles that frustrate them because of the dynamics of the structure. Something about their own lives, relationships, or position makes each person 'right' for the part he plays. It all seems so predetermined, yet the factors that create this may, individually, be quite inconsequential. People may even be drawn into the roles which clash with their personalities. Then, horrifyingly, their personalities may change over time to match the role they have been given." (p. 412)